Added backups of all data, restorable on another computer (#1008)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/Tests/Tools/PluginSystem/LeftOverConfigurationObjectsTests.cs

@@ -60,7 +60,7 @@ public sealed class LeftOverConfigurationObjectsTests
     [Test]
     public async Task TheObjectsOfAPluginWhichDidNotStartStay()
     {
-        var wasChanged = await PluginConfigurationObject.CleanLeftOverConfigurationObjects(PluginConfigurationObjectType.CHAT_TEMPLATE, x => x.ChatTemplates, [new AvailablePlugin()], new HashSet<Guid>(), new HashSet<Guid> { PLUGIN_ID }, []);
+        var wasChanged = await PluginConfigurationObjectDescriptors.CHAT_TEMPLATE.CleanLeftOverAsync([new AvailablePlugin()], new HashSet<Guid>(), new HashSet<Guid> { PLUGIN_ID }, []);
 
         Assert.Multiple(() =>
         {
@@ -72,7 +72,7 @@ public sealed class LeftOverConfigurationObjectsTests
     [Test]
     public async Task TheObjectsOfAPluginWhichStartedWithoutThemAreRemoved()
     {
-        var wasChanged = await PluginConfigurationObject.CleanLeftOverConfigurationObjects(PluginConfigurationObjectType.CHAT_TEMPLATE, x => x.ChatTemplates, [new AvailablePlugin()], new HashSet<Guid>(), new HashSet<Guid>(), []);
+        var wasChanged = await PluginConfigurationObjectDescriptors.CHAT_TEMPLATE.CleanLeftOverAsync([new AvailablePlugin()], new HashSet<Guid>(), new HashSet<Guid>(), []);
 
         Assert.Multiple(() =>
         {

app/Tests/Tools/PluginSystem/ManagedTokenizerStateTests.cs

@@ -162,8 +162,8 @@ public sealed class ManagedTokenizerStateTests
             throw new InvalidOperationException("The configuration of this test is not a Lua table.");
 
         var configObjects = new List<PluginConfigurationObject>();
-        PluginConfigurationObject.TryParse(PluginConfigurationObjectType.LLM_PROVIDER, x => x.Providers, x => x.NextProviderNum, mainTable, PLUGIN_ID, ref configObjects, dryRun: false, PLUGIN_PATH);
-        PluginConfigurationObject.TryParse(PluginConfigurationObjectType.EMBEDDING_PROVIDER, x => x.EmbeddingProviders, x => x.NextEmbeddingNum, mainTable, PLUGIN_ID, ref configObjects, dryRun: false, PLUGIN_PATH);
+        PluginConfigurationObjectDescriptors.LLM_PROVIDER.TryParse(mainTable, PLUGIN_ID, configObjects, dryRun: false, PLUGIN_PATH);
+        PluginConfigurationObjectDescriptors.EMBEDDING_PROVIDER.TryParse(mainTable, PLUGIN_ID, configObjects, dryRun: false, PLUGIN_PATH);
         return configObjects;
     }
 

app/Tests/Tools/PluginSystem/PluginConfigurationObjectDescriptorsTests.cs

@@ -0,0 +1,28 @@
+using AIStudio.Tools.PluginSystem;
+
+namespace AIStudio.Tests.Tools.PluginSystem;
+
+/// <summary>
+/// Checks that every type of configuration object has its descriptor.
+/// </summary>
+/// <remarks>
+/// Reading the objects from a configuration plugin and removing the left-over ones go through the
+/// descriptors. A type without one would be read by neither: a configuration plugin could define such
+/// objects without effect, and the ones a removed plugin left behind would stay in the settings.
+/// </remarks>
+[TestFixture]
+public sealed class PluginConfigurationObjectDescriptorsTests
+{
+    [Test]
+    public void EveryTypeHasExactlyOneDescriptor()
+    {
+        var describedTypes = PluginConfigurationObjectDescriptors.ALL.Select(descriptor => descriptor.Type).ToList();
+        var configurableTypes = Enum.GetValues<PluginConfigurationObjectType>().Where(type => type is not PluginConfigurationObjectType.NONE and not PluginConfigurationObjectType.UNKNOWN);
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(describedTypes, Is.EquivalentTo(configurableTypes));
+            Assert.That(describedTypes, Is.Unique, "A type described twice would be read and cleaned up twice.");
+        });
+    }
+}